AS28154
AR TELECOM PROVEDOR DE INTERNET LTDA
Reputation · trust score
A transparent 0–100 signal. Every entity starts at a neutral baseline of 65; threat-intel blocklists, exposure, reverse-DNS, routing and allocation each adjust it up or down. Higher is more trustworthy.
- Baseline (neutral) 65
- Multiple-origin (MOAS) routing anomaly −12
- Isp allocation +5
- Trust score 58 / 100
Experimental · trust-vectors model v1.1.0 — a transparent heuristic, not a definitive verdict. How it works →
⚠ 2 MOAS prefixes — multiple origin ASNs detected
All MOAS anomalies →A previously stable prefix originated by AS28154 is now also announced by another ASN (MOAS — Multiple-Origin AS), detected from our RIPE RIS collectors. Often benign (anycast, multi-homing, or a recent transfer) — but it can signal a route leak or prefix hijack, so it's worth inspecting.
| Prefix | Origin ASNs | Last detected (UTC) |
|---|---|---|
| 187.49.219.0/24 | AS28154, AS61642 | 2026-07-22 23:23:24 |
| 187.49.217.0/24 | AS28154, AS61642 | 2026-07-22 23:23:24 |
Network profile
Source: PeeringDB →Present at 1 internet exchange: IX.br (PTT.br) São Paulo: ATM/MPLA
AS28154 — global IP footprint
Cities where AS28154 has measurable IPv4 allocation. Click any dot to open that city's page. Size and color scale with IP count.
Top CIDR ranges
| CIDR | IPs | PTR Density | Organization | Country | State | City |
|---|---|---|---|---|---|---|
| 177.54.64.0/20 | 4.1K |
87.5%
|
AR TELECOM PROVEDOR DE INTERNET LTDA | BR | São Paulo | Casa Branca |
| 187.49.208.0/20 | 4.1K |
86.0%
|
AR TELECOM PROVEDOR DE INTERNET LTDA | BR | São Paulo | Mococa |
BGP Announced Prefixes
Live BGP anomalies →Prefixes AS28154 actually originates in BGP, observed across our RIPE RIS collectors. This live routing view can differ from the registry allocation above.
| Prefix | Announcement samples | Last seen |
|---|---|---|
| 187.49.210.0/24 | 81,769 | 2026-07-23 02:37:44 |
| 187.49.215.0/24 | 64,332 | 2026-07-23 02:11:07 |
| 187.49.208.0/20 | 52,789 | 2026-07-23 02:37:44 |
| 187.49.212.0/22 | 52,673 | 2026-07-23 02:37:49 |
| 177.54.64.0/20 | 52,354 | 2026-07-23 02:37:57 |
| 187.49.218.0/24 | 52,157 | 2026-07-23 02:37:57 |
| 187.49.208.0/24 | 48,524 | 2026-07-23 02:11:03 |
| 177.54.72.0/22 | 37,495 | 2026-07-23 02:11:03 |
| 177.54.76.0/22 | 37,424 | 2026-07-23 02:11:03 |
| 187.49.220.0/24 | 37,063 | 2026-07-23 02:11:03 |
| 177.54.69.0/24 | 36,942 | 2026-07-23 02:11:03 |
| 187.49.208.0/23 | 35,602 | 2026-07-23 02:11:03 |
| 177.54.68.0/22 | 34,653 | 2026-07-23 02:37:49 |
| 177.54.64.0/22 | 34,617 | 2026-07-23 02:37:49 |
| 177.54.67.0/24 | 33,831 | 2026-07-23 02:11:03 |
| 177.54.74.0/23 | 33,374 | 2026-07-23 02:11:03 |
| 187.49.219.0/24 | 32,929 | 2026-07-23 02:37:57 |
| 187.49.217.0/24 | 31,772 | 2026-07-23 02:37:57 |
| 187.49.216.0/24 | 31,681 | 2026-07-23 02:37:57 |
| 187.49.208.0/21 | 30,843 | 2026-07-23 02:11:03 |
| 187.49.209.0/24 | 30,822 | 2026-07-23 02:11:03 |
| 177.54.72.0/21 | 30,696 | 2026-07-23 02:11:03 |
| 187.49.216.0/21 | 30,679 | 2026-07-23 02:11:03 |
| 177.54.64.0/21 | 30,652 | 2026-07-23 02:11:03 |
| 187.49.221.0/24 | 23,370 | 2026-07-13 06:46:32 |
| 187.49.211.0/24 | 22,918 | 2026-07-23 02:37:44 |
| 187.49.222.0/24 | 22,809 | 2026-07-13 06:46:32 |
| 177.54.66.0/24 | 22,542 | 2026-07-23 02:11:03 |
| 187.49.223.0/24 | 20,837 | 2026-07-13 06:46:32 |
| 187.49.222.0/23 | 6,358 | 2026-07-22 23:16:47 |
| 177.54.78.0/23 | 2,777 | 2026-07-22 23:16:42 |
| 177.54.77.0/24 | 2,156 | 2026-07-23 00:48:26 |
| 177.54.72.0/24 | 2,152 | 2026-07-23 00:48:26 |
| 177.54.65.0/24 | 1,563 | 2026-07-23 00:48:26 |
Frequently Asked Questions
What is AS28154?
AS28154 is an Autonomous System Number assigned to AR TELECOM PROVEDOR DE INTERNET LTDA. An ASN identifies a network that controls a specific set of IP addresses and determines how traffic is routed across the internet via BGP (Border Gateway Protocol).
How many IP addresses does AS28154 announce?
AS28154 announces 8.2K IPv4 addresses distributed across 2 routed CIDR prefixes. The network is registered in Brazil.
Who operates AS28154?
AS28154 is operated by AR TELECOM PROVEDOR DE INTERNET LTDA. The organization is based in Brazil. You can view all IP ranges and related ASNs on the organization page.
What country is AS28154 registered in?
AS28154 is registered in Brazil. This indicates where the network operator is headquartered, though the IP addresses it announces may serve users globally.
